a) Let U be a structure and let s: V → |U|. Define a truth assignment v over the set of prime formulas using v(a) = T iff Fu a[s] Show that for any formula (prime or no prime), v(a)T iff Fu a[s] b) Conclude that if I tautologically implies , then I logically implies p. Please be as clear as possible. Explain your answer. Thank you very much.

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